[FRV] Hookize REGISTER_MOVE_COST and MEMORY_MOVE_COST

[Nick Clifton]

Hi Anatoly,

>          * config/frv/frv.h (REGISTER_MOVE_COST, MEMORY_MOVE_COST): Remove.
>          * config/frv/frv-protos.h (frv_register_move_cost): Remove.
>          * config/frv/frv.c (frv_register_move_cost): Make static. Change
>          arguments type to reg_class_t.
>          (frv_memory_move_cost): New.
>          (TARGET_REGISTER_MOVE_COSTS, TARGET_MEMORY_MOVE_COSTS): Define.

Approved - please apply.

Cheers
   Nick